Yes, T-mar, I looked up the Soma ($30) and it is indeed very long - extending almost 9" above the min. insert line! Does not come in a 21.1 diameter, but like you said easy enough to shave off the thickness.

Colonel, that is a beautiful setup. (Is the cool compass part of the adapter, or an add-on?) If I can accept the 7" total length, it is a nice-looking piece for $16. Plus, it would likely match the finish of the VO stem I will be using.

I'm currently having a guy turn a seatpost from 27.2 to 26.8, so I'll see how much he charges.

Scooper, did you need a different wedge for the turned-down version?

Thanks for the replies and suggestions!